<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>事件的基本使用</title>
    <!-- 引入vue -->
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
    <!-- 

    -->
    <!-- 准备好一个容器 -->
    <div id="root">
        <!-- 遍历数组 -->
        <h2>人员列表</h2>
        <button @click="updateMei">更新马冬梅的信息</button>
        <ul>
            <li v-for="(p,index) of persons" :key="index">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>
    <script type="text/javascript">
        Vue.config.productionTip = false;//阻止vue在启动时生成生产提示
        //用computed实现
        const vm = new Vue({
            el: "#root",
            data: {
                persons: [
                    { id: "001", name: "马冬梅", age: 19, sex: '女' },
                    { id: "002", name: "周冬雨", age: 20, sex: '女' },
                    { id: "003", name: "周杰伦", age: 21, sex: '男' },
                    { id: "004", name: "温兆伦", age: 22, sex: '男' },
                ],
            },
            methods: {
                updateMei() {
                    // this.persons[0].name="马老师"//奏效
                    // this.persons[0].age=50//奏效
                    // this.persons[0].sex="男"//奏效
                    // this.persons[0] = { id: "001", name: "马老师", age: 50, sex: "男" }
                    this.persons.splice(0, 1, { id: "001", name: "马老师", age: 50, sex: "男" })
                }
            }
        })
    </script>
</body>

</html>